Update! Heatsink/spacer from coins? How to make a spacer for s2+?(updated with pictures!)

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hannesremo
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Update! Heatsink/spacer from coins? How to make a spacer for s2+?(updated with pictures!)

So I need to build a spacer for my s2+ triple. Could I sand down some fitting coins, make them smooth and solder them together? I believe they're brass so should work?

 Update it did work lol!

Edited by: hannesremo on 01/13/2018 - 04:39
everydaysurvivalgear
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Stacking chips lol

I have some spare i wonder how much shipping is from here. If i can sneak them in as a letter. If some one knows let me know please?

I found a shop that sells aluminum in good sizes per meter instead of having to buy 3m minimum. Its round stock i got some 32mm round stock for X6 spacers its 1 meter in length. For the s2+ spacers i use 2.5 by 2.5mm flat bar and round it of but its only 3mm thick.

You can also try brass washers they are common use for spark plugs i think?
I just googled found an Ebay listing. You would want the ones with the smallest internal holes.

Brass washers

MascaratumB
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hannesremo, you may want to take a look at this Wink
http://budgetlightforum.com/node/45343

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FPV
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Before I found kiriba-ru I did the coin mod, there are some amazing coins out there that are a 100% match with the sizes you need.

UK 1p/penny is 20.3mm
EUR 1 cent is 16.25mm

that’s all you need, remove the top part/rim on the S2+ pill if you don’t want to use anything with 16mm.

hannesremo
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Thanks but, I'm trying the coins soldered first and the if not I'll buy a 19mm plug used for plumbing either brass or copper, seen that done and seems to work! Will post about how it's going! 

hannesremo
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Euro 10cent is perfect, 19,8mm and solderes just fine will try that for now!

everydaysurvivalgear
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Yea the end caps used for plumbing like the ones i used on my BLF project they would also work and you can cut them to size.
They have copper ones also i think.
https://www.reece.com.au/plumbing/products/pipe-and-fittings/conex-banni...

G0OSE
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If you get pennies make sure to get old ones, there isn’t much copper in them now! I believe it’s pre 1992 they were copper, now they are just plated steel. Apparently when they stopped them they were worth 1.5p in copper………if only we knew lol!

hannesremo
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Yeah coins dien't work lol, just tried haha, not sticking to eachother! So I think plumbing it is lol!

FPV
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They do stick, but you’ll need more heat.
coin – solder paste – coin – paste – coin, etc
then hit it with a blow torch in your vise

hannesremo
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Yeah I just have a small mini torch but surely that would do, maybe sand smoothbis needed first?

G0OSE
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Well, I just went through our coin collection (saving up for years – 1p 2p 5p in a bottle) had 760g of pure copper coins, 1p and 2p. Easily done with a magnet Wink

hannesremo
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Well just got rhe coins soldered together!

A lot of heat and cleaning with acetone first did the trick!

bilakos10
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hannesremo wrote:

Well just got rhe coins soldered together!


A lot of heat and cleaning with acetone first did the trick!

Would you mind posting a few pictures while you are going along with the mod?
The other day I was thinking about going the same route with my S2+.

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MascaratumB
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bilakos10 wrote:
hannesremo wrote:

Well just got rhe coins soldered together!


A lot of heat and cleaning with acetone first did the trick!

Would you mind posting a few pictures while you are going along with the mod?

+1 here Smile
Although I have a pill and a spacer from kiriba-ru (hence my post above) I will probably need a 3rd spacer but I’m having difficulties to get a “proper” pre-made material. So maybe this method can help a bit!

DB Custom said: "Hide your billfold, cut up your credit cards... you're a perfect candidate for full blown flashaholism and will soon need dedicated flashlight cabinets. [...] Have fun! Modding is next... :P" 

REVIEWS : Amutorch S3 - XPG3-S3 /  AM S3 vs Neal 219c  /  Amutorch AM30 - XHP70.2 / Nitefox UT20 / Sofirn SF14 & SP10A / Sofirn SP32A / Sofirn SP10B

Mods and tricks: 1 / 2 / 3 / 4 / 5                             Convoy S2+ TIR Lenses on: XML2 / XPL-HI                             Others: Convoy S2+ Mini (Biscotti 3 & 1*7135)

Sofirn K6 Discussion: 1 / 2 / 3

 

everydaysurvivalgear
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How many MM thick is the spacer?
Edit this would depend on the optics being used.

kiriba-ru
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regular s2+ spacer is 6mm thick.

Meanwhile in Russia: https://twitter.com/CrazyinRussia

hannesremo
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I tried to make it with 2 coins first which is 4,5mm kd triple with included optic! Seems like there is no 'play" space seems nice and tight! lol! 3 coins is roughly 6mm fits fine still! Should I use the 6mm eventho 4,5mm works too?

kiriba-ru
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For pilled flashlights you can make spacers not so precision because you can compensate wrong height just by screwing/unscrewing pill.

Meanwhile in Russia: https://twitter.com/CrazyinRussia

FPV
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I made different heights with coins depending on the light I wanted to put this in. protected vs. unprotected battery.
One S2+ has 8+mm spacer for shorter, really tight batteries. Another only 5mm because I sanded away a bit too much.
Also depends on the springs you are using, which driver, what tail cap, etc

hannesremo
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I used 10 cent euro coins!

hannesremo
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Ok pics coming soon, too tired now for that lol!

Anyways 3 coins is needed for proper fit! I sanded them smooth and solder them together aswell as solder the top of the pill, where it's about 1mm recessed, flush and sanded it smooth! Now the top of the pill is smooth like a hotplate! 

FPV
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I have done two spacers with coins and it all went well, but then I thankfully found kiriba-ru and his selection!

While making coin spacers is a ton of fun (“I did it on my own”) – you would also have to account for sanding time, soldering, drilling the whole thing and then cleaning. All in all, it is fun to do and a great workout but an actual copper spacer for a few dollars is probably the more economic solution.
Coins however also allow to alter the size of the coin and make different spacers easily – you could combine 16, 20, 15, 20 (and so on) and it looks like more like a heatsink rather than a spacer.

everydaysurvivalgear
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Yea but some time you want some thing done now not in a week or two. Or is that only me? lol

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I agree, if someone is pressed for time or has enough free time on their hands… it is the way to go!

hannesremo
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yeah finished them just now , lots of sanding, soldering, cleaning and drilling but fun! However I never sanded them down for soldering, only the contact surfice to pillband led board! Should I sand the solder surfice aswell? And redo them? I mean the coins sit perfectly on top of eachother but dont know? Maybe the solder filled the gaps lol?

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I would leave it and see how it handles the heat.

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hannesremo wrote:

yeah finished them just now , lots of sanding, soldering, cleaning and drilling but fun! However I never sanded them down for soldering, only the contact surfice to pillband led board! Should I sand the solder surfice aswell? And redo them? I mean the coins sit perfectly on top of eachother but dont know? Maybe the solder filled the gaps lol?

I did this a while back with some old pennies. I sanded them all flat first, it was a pain in the ass but I was actually able to turn the stack on the lathe afterward.

hannesremo
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Yeah I filled the top of the pill with solder and sanded it smooth aswell to get a bigger surfice for the spacer to sit on and aid cooling aswelI! Hope solder works well for heat dissapation? The coins were a bit uneven but I think it will be fine, migh just aswell try it! I soldered the recessed top of the pill and holes shut!

Jerommel
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FPV wrote:
Before I found kiriba-ru I did the coin mod, there are some amazing coins out there that are a 100% match with the sizes you need.

UK 1p/penny is 20.3mm
EUR 1 cent is 16.25mm

that’s all you need, remove the top part/rim on the S2+ pill if you don’t want to use anything with 16mm.


The Euro coins that look like copper (1 cent, 2 cents and 5 cents) are not copper but an alloy with a lot of iron (they stick to magnets).
I wouldn’t advise anyone to use them as heat sinks.

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

hannesremo
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The coin is 10cent euro "nordic gold mix" which is 89% copper, 5% aluminium, 5% zink and 1% thin, so should be pretty good right?

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